> For the complete documentation index, see [llms.txt](https://docs.abtasty.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.abtasty.com/feature-experimentation-and-rollout/campaign-creation/how-to-create-server-side-a-b-tests/sequential-testing-alerts.md).

# Sequential Testing Alerts

<figure><img src="/files/FVUJV3gqpmJTwPTfrgah" alt=""><figcaption></figcaption></figure>

Sequential Testing Alerts help you detect underperforming variations early in an A/B test campaign.

The feature continuously monitors your campaign’s primary goal and uses the selected sensitivity threshold to identify variations that show a decrease in conversion rate compared to the baseline.

When an underperforming variation is detected, Sequential Testing Alerts can:

* send an email alert
* automatically interrupt the campaign and send an email notification

This is especially useful for campaigns where a variation could negatively affect important business logic, such as pricing, eligibility, routing, or recommendation rules.

### How it works

Sequential Testing Alerts rely on two settings:

* the action to trigger when an underperforming variation is detected
* the sensitivity threshold used to trigger the alert

The algorithm evaluates the campaign based on the selected primary goal and the chosen sensitivity level.

### Configure Sequential Testing Alerts

To enable Sequential Testing Alerts: check the action you want to trigger when the algorithm detects an underperforming variation. Then, select the sensitivity threshold.

#### Select the action to trigger

You can choose one of the following actions:

* **Receive an email alert without automatic campaign interruption**
* **Automatically interrupt the campaign and be notified by email**

Use the first option when you want to review the situation manually before taking action.

Use the second option when you want the campaign to stop automatically as soon as a losing variation is detected.

#### Select the sensitivity threshold

Choose how quickly Sequential Testing Alerts should react to negative signals:

* **High**\
  Alerts are more likely to be triggered, but losing variations are identified sooner. This is the safest option.
* **Balanced**\
  Alerts may still be triggered, while losing variations are identified within a reasonable amount of time.
* **Low**\
  Alerts are less frequent, but losing variations may take longer to be identified.

{% hint style="warning" %}

### Important details

* Sequential Testing Alerts are only available when a primary goal is configured.
* Detection is based on the campaign’s primary goal and the selected sensitivity threshold.
* When Sequential Testing Alerts send email notifications, all users in the account are notified.
  {% endhint %}


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